Java Reference
In-Depth Information
menuBar.add(file);
frame.setJMenuBar(menuBar);
}
private void createAndShowGUI() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setPreferredSize(new Dimension(200, 200));
addMenu(frame);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingDemo swingDemo = new SwingDemo();
swingDemo.createAndShowGUI();
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("Exit")) {
System.exit(0);
}
}
}
Again, before we discuss how and why it works, let's see what it looks like. Figure 7-2 shows our
additions.
Figure 7-2. SwingDemo with a menu
